ABAP Select data from SAP table BTCCTL into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BTCCTL table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to BTCCTL. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the BTCCTL table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_BTCCTL TYPE STANDARD TABLE OF BTCCTL,
      WA_BTCCTL TYPE BTCCTL,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <BTCCTL> TYPE BTCCTL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BTCCTL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BTCCTL
  INTO TABLE IT_BTCCTL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BTCCTL
*  INTO TABLE @DATA(IT_BTCCTL2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_BTCCTL INDEX 1 INTO DATA(WA_BTCCTL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BTCCTL ASSIGNING <BTCCTL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BTCCTL>-BTCSERVER = 1.
<BTCCTL>-CTLOBJ = 1.
<BTCCTL>-BTCSYSTEM = 1.
<BTCCTL>-TIMSTMPDT = 1.
<BTCCTL>-TIMSTMPTM = 1.

ENDLOOP.

LOOP AT IT_BTCCTL INTO WA_BTCCTL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BTCCTL-TRACELEVEL, sy-vline,
  WA_BTCCTL-TRCTIMSTDT, sy-vline,
  WA_BTCCTL-TRCTIMSTTM, sy-vline,
  WA_BTCCTL-TRCCHUSR, sy-vline,
  WA_BTCCTL-OPMODE, sy-vline,
  WA_BTCCTL-OPMODTSTDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BTCCTL you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_BTCCTL TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_BTCCTL INTO WA_BTCCTL.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BTCCTL_STR, 
BTCSERVER TYPE STRING,
CTLOBJ TYPE STRING,
BTCSYSTEM TYPE STRING,
TIMSTMPDT TYPE STRING,
TIMSTMPTM TYPE STRING,
TRACELEVEL TYPE STRING,
TRCTIMSTDT TYPE STRING,
TRCTIMSTTM TYPE STRING,
TRCCHUSR TYPE STRING,
OPMODE TYPE STRING,
OPMODTSTDT TYPE STRING,
OPMODTSTTM TYPE STRING,
OPMODCHUSR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BTCCTL_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_BTCCTL_STR-BTCSERVER sy-vline 
WA_BTCCTL_STR-CTLOBJ sy-vline 
WA_BTCCTL_STR-BTCSYSTEM sy-vline 
WA_BTCCTL_STR-TIMSTMPDT sy-vline 
WA_BTCCTL_STR-TIMSTMPTM sy-vline 
WA_BTCCTL_STR-TRACELEVEL sy-vline 
WA_BTCCTL_STR-TRCTIMSTDT sy-vline 
WA_BTCCTL_STR-TRCTIMSTTM sy-vline 
WA_BTCCTL_STR-TRCCHUSR sy-vline 
WA_BTCCTL_STR-OPMODE sy-vline 
WA_BTCCTL_STR-OPMODTSTDT sy-vline 
WA_BTCCTL_STR-OPMODTSTTM sy-vline 
WA_BTCCTL_STR-OPMODCHUSR sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.